^So we have 57th street (aka the strip of supertalls) and this (super dense plaza with supertalls) It's quite awesome.

Its going to do wonders for the Island. Some density distributed to the west side of Manhattan as the East is simply to dense. A mass of skyscrapers that will hopefully be continues from east to west. Somewhat what you see on 42nd street. Only applies from 34th and up.

Yeah, at least in the near-term, there is no way they will allow big highrises in the heart of the Clinton area. There are some sites, though, that can be developed with towers because of exceptions (urban renewal land, variances, and the like).